Sufficient conditions for k-leaf-connected graphs on distance (signless Laplacian) spectral radius

Let [Formula: see text] be a graph and [Formula: see text] be a subset of [Formula: see text] with [Formula: see text]. A graph [Formula: see text] is called [Formula: see text]-leaf-connected if [Formula: see text] and [Formula: see text] always has a spanning tree [Formula: see text] such that [Formula: see text] is precisely the set of leaves of [Formula: see text]. In this paper, we establish some sufficient conditions for a graph to be [Formula: see text]-leaf-connected in terms of distance spectral radius and distance signless Laplacian spectral radius. Furthermore, we also obtain some sufficient conditions on the distance (signless Laplacian) spectral radius of the complement of a graph [Formula: see text] for [Formula: see text] to be [Formula: see text]-leaf-connected.

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Publication Details

Journal
Discrete Mathematics Algorithms and Applications
Published
2025-04-23
DOI
https://doi.org/10.1142/s179383092550082x
Primary Topic
Graph theory and applications
Type
article
Field-Weighted Citation Impact
0.00
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article

Sufficient conditions for k-leaf-connected graphs on distance (signless Laplacian) spectral radius

Yong‐Jie Lu, Yu Zhang, Qiannan Zhou
Discrete Mathematics Algorithms and Applications
Graph theory and applications
article

Sufficient conditions for k-leaf-connected graphs on distance (signless Laplacian) spectral radius

Yong‐Jie Lu, Yu Zhang, Qiannan Zhou
article en

Abstract

Let [Formula: see text] be a graph and [Formula: see text] be a subset of [Formula: see text] with [Formula: see text]. A graph [Formula: see text] is called [Formula: see text]-leaf-connected if [Formula: see text] and [Formula: see text] always has a spanning tree [Formula: see text] such that [Formula: see text] is precisely the set of leaves of [Formula: see text]. In this paper, we establish some sufficient conditions for a graph to be [Formula: see text]-leaf-connected in terms of distance spectral radius and distance signless Laplacian spectral radius. Furthermore, we also obtain some sufficient conditions on the distance (signless Laplacian) spectral radius of the complement of a graph [Formula: see text] for [Formula: see text] to be [Formula: see text]-leaf-connected.

Discrete Mathematics Algorithms and Applications
Jiangsu Normal University (CN)
Openalex Percentile: Top 87%
Graph theory and applications
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